CN108877673B - Method and device for controlling driving current of display panel, electronic equipment and storage medium - Google Patents
Method and device for controlling driving current of display panel, electronic equipment and storage medium Download PDFInfo
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- CN108877673B CN108877673B CN201810848089.5A CN201810848089A CN108877673B CN 108877673 B CN108877673 B CN 108877673B CN 201810848089 A CN201810848089 A CN 201810848089A CN 108877673 B CN108877673 B CN 108877673B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
- G09G3/3233—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix with pixel circuitry controlling the current through the light-emitting element
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/2092—Details of a display terminals using a flat panel, the details relating to the control arrangement of the display terminal and to the interfaces thereto
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
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Abstract
The disclosure relates to a method and a device for controlling a driving current of a display panel, an electronic device and a storage medium, wherein a standard driving current of the display panel is obtained by calculation through a power function of the display panel, an actual driving current is detected in the working process of the display panel, the actual driving current is compared with the standard driving current, whether the actual driving current exceeds the standard or not is judged, and if the actual driving current exceeds the standard, the actual driving current is adjusted. On one hand, the problems that the brightness of the display panel fluctuates, the brightness changes greatly and the display effect is influenced due to the fact that the current flowing through the display panel changes along with the changes of illumination and temperature are solved by adjusting the actual driving current, and the display effect is improved; on the other hand, the phenomenon that the driving current is too large so as to damage the luminescent material and the driving circuit of the display panel is avoided, and the service life of the display panel is prolonged.
Description
Technical Field
The present disclosure relates to the field of display technologies, and in particular, to a method and an apparatus for controlling a driving current of a display panel, an electronic device, and a storage medium.
Background
With the progress of the technology, the application of the OLED screen is more and more extensive, and the OLED screen has the advantages of no need of a backlight source, high contrast, thin thickness, wide viewing angle, high reaction speed, applicability to a flexible panel, wide use temperature range, simpler structure and manufacture process and the like.
However, as the OLED screen varies with illumination and temperature, the current through the OLED may vary. Further, the brightness of the screen fluctuates, which causes large brightness change and affects the display effect, and the current change affects the service life of the OLED screen luminescent material and the whole drive circuit.
It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present disclosure, and thus may include information that does not constitute prior art known to those of ordinary skill in the art.
Disclosure of Invention
The present disclosure is directed to a method and apparatus for controlling a driving current of a display panel, an electronic device, and a storage medium, which avoid a current flowing through the display panel from varying with a change in illumination and temperature. Further, the brightness of the display panel fluctuates, which causes a problem that the brightness changes greatly and the display effect is affected.
According to a first aspect of the present disclosure, there is provided a method of controlling a driving current of a display panel, comprising:
determining a power function of the display panel;
calculating the standard driving current of the display panel through the power function;
detecting an actual driving current of the display panel;
judging whether the actual driving current exceeds the standard or not by comparing the actual driving current with the standard driving current;
and if the actual driving current exceeds the standard, adjusting the actual driving current.
According to an embodiment of the present disclosure, the determining a power function of a display panel includes:
detecting standard driving currents corresponding to a plurality of power factors of a display panel, wherein the power factors are the ratio of the sum of the brightness of lighted pixels on the display panel to the sum of the maximum brightness of all the pixels;
and determining the power function of the display panel according to the standard driving current and the type of the power function corresponding to the plurality of power factors of the display panel.
According to an embodiment of the present disclosure, the power function is a piecewise function.
According to an embodiment of the present disclosure, the detecting driving currents corresponding to a plurality of power factors of a display panel includes:
and detecting the driving current corresponding to the power factor at the demarcation point of the power function.
According to an embodiment of the present disclosure, the calculating a standard driving current of a display panel includes:
and calculating the standard driving current corresponding to each power factor of the display panel, and storing the standard driving current.
According to an embodiment of the present disclosure, judging whether the actual driving current exceeds the standard by comparing the actual driving current with the standard driving current includes:
acquiring the stored standard driving current;
multiplying the standard driving current by a specified coefficient to obtain a standard driving current threshold value;
and comparing the actual driving current with the standard driving current threshold value, wherein if the actual driving current is greater than the standard driving current threshold value, the actual driving current exceeds the standard.
According to an embodiment of the present disclosure, the adjusting the actual driving current if the actual driving current exceeds a standard includes:
and if the actual driving current exceeds the standard, reducing the driving voltage so as to reduce the actual driving current.
According to a second aspect of the present disclosure, there is provided an apparatus for controlling a driving current of a display panel, comprising:
the power function determining module is used for determining a power function of the display panel;
the standard driving current calculating module is used for calculating the standard driving current of the display panel through the power function;
the detection module is used for detecting the actual driving current of the display panel;
the judging module is used for judging whether the actual driving current exceeds the standard or not by comparing the actual driving current with the standard driving current;
and the adjusting module is used for adjusting the actual driving current if the actual driving current exceeds the standard.
According to a third aspect of the present disclosure, there is provided an electronic device comprising
A processor; and
a memory having computer readable instructions stored thereon which, when executed by the processor, implement a method according to any of the above.
According to a fourth aspect of the present disclosure, there is provided a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements a method according to any one of the above.
According to the method for controlling the driving current of the display panel, the standard driving current of the display panel is obtained through calculation according to the power function of the display panel, the actual driving current is detected in the working process of the display panel, the actual driving current is compared with the standard driving current, whether the actual driving current exceeds the standard or not is judged, and if the actual driving current exceeds the standard, the actual driving current is adjusted. On one hand, the problems that the display effect is influenced due to large brightness change caused by brightness fluctuation of the display panel due to the fact that the driving current flowing through the display panel is changed along with the change of illumination and temperature are solved by adjusting the actual driving current, and the display effect is improved; on the other hand, the phenomenon that the driving current is too large so as to damage the luminescent material and the driving circuit of the display panel is avoided, and the service life of the display panel is prolonged.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
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The above and other features and advantages of the present disclosure will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.
Fig. 1 schematically illustrates a flowchart of a method of controlling a driving current of a display panel according to an exemplary embodiment of the present disclosure.
Fig. 2 schematically illustrates a block diagram of an apparatus for controlling a driving current of a display panel according to an exemplary embodiment of the present disclosure.
FIG. 3 schematically illustrates a block diagram of an electronic device according to an exemplary embodiment of the present disclosure; and (c) and (d).
Fig. 4 schematically illustrates a schematic diagram of a computer-readable storage medium according to an exemplary embodiment of the present disclosure.
Fig. 5 schematically illustrates a schematic diagram of a display panel driving current detection apparatus according to an exemplary embodiment of the present disclosure.
Fig. 6 schematically illustrates a display panel driving current detection apparatus according to another exemplary embodiment of the present disclosure.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals denote the same or similar parts in the drawings, and thus, a repetitive description thereof will be omitted.
Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the disclosure. One skilled in the relevant art will recognize, however, that the embodiments of the disclosure can be practiced without one or more of the specific details, or with other methods, components, materials, devices, steps, and so forth. In other instances, well-known structures, methods, devices, implementations, materials, or operations are not shown or described in detail to avoid obscuring aspects of the disclosure.
The block diagrams shown in the figures are functional entities only and do not necessarily correspond to physically separate entities. That is, these functional entities may be implemented in the form of software, or in one or more software-hardened modules, or in different networks and/or processor devices and/or microcontroller devices.
The method for controlling the driving current of the display panel is used for controlling the driving current of the display panel and avoiding the influence of overlarge driving current of the display panel on the display effect and the service life of the display panel. The method is mainly suitable for the display panel such as an OLED display panel and the like, wherein the driving current fluctuates due to the change of environmental conditions such as illumination, temperature and the like.
Fig. 1 is a flowchart of a method for controlling a driving current of a display panel according to an embodiment of the present disclosure, as shown in fig. 1, the method includes:
step S110, determining a power function of the display panel;
step S120, calculating the standard driving current of the display panel through the power function;
step S130, detecting the actual driving current of the display panel;
step S140, judging whether the actual driving current exceeds the standard or not by comparing the actual driving current with the standard driving current;
and S150, if the actual driving current exceeds the standard, adjusting the actual driving current.
According to the method for controlling the driving current of the display panel, the standard driving current of the display panel is obtained through calculation according to the power function of the display panel, the actual driving current is detected in the working process of the display panel, the actual driving current is compared with the standard driving current, whether the actual driving current exceeds the standard or not is judged, and if the actual driving current exceeds the standard, the actual driving current is adjusted. On one hand, the problems that the brightness of the display panel fluctuates, the brightness changes greatly and the display effect is influenced due to the fact that the current flowing through the display panel changes along with the changes of illumination and temperature are solved by adjusting the actual driving current, and the display effect is improved; on the other hand, the phenomenon that the driving current is too large so as to damage the luminescent material and the driving circuit of the display panel is avoided, and the service life of the display panel is prolonged.
Next, a message text processing method in the present exemplary embodiment will be further described.
In step S110, a power function of the display panel may be determined.
In the operation of the display panel, the power factor of the display panel is the ratio of the sum of the luminances of the lighted pixels on the display panel to the sum of the maximum luminances of all the pixels, as shown in formula 1:
where APL is the power factor, SUM is the SUM of the luminances of the pixels lit on the display panel, and SUM is the SUM of the maximum luminances of all the pixels on the display panel.
According to the power control function of the display panel, the power function of the display panel can be obtained as a function of the APL, and the type of the power function is the same as that of the power control function. And selecting a plurality of power factors according to the type of the power function, and detecting the driving current corresponding to the plurality of power factors.
In the display panel, the driving current and the brightness of the display panel are generally in a linear relationship, and the current brightness of the display panel is calculated through the driving current. And obtaining the current power through the ratio of the current brightness and the maximum brightness of the display panel. That is, a plurality of sets of power and power factor data are obtained, and the power function corresponding to the display panel can be obtained according to the plurality of sets of power and power factor data and the type of the power function.
For example, for an OLED display panel, the power control function is a piecewise function, and each segment is a linear function. And detecting the driving current corresponding to the power factors of the segmentation function end point and the demarcation point, and calculating through the driving current to obtain the power corresponding to the segmentation demarcation point and the end point power factor so as to obtain the power function. In practical application, the end points of the power function can be selected as a window point with the highest gray scale of 5% and a point with the highest gray scale of the full screen, and the driving currents corresponding to the two end points are respectively detected.
Certainly, in practical applications, the power control function of the display panel may also be another type of function, and the corresponding power function is also another type of function, which is not specifically limited in this embodiment of the disclosure. At this time, the detection point of the power factor can be adjusted to obtain the power factor and the corresponding driving current, and further determine the power function. For example, the power control function may be a quadratic function, the power function is also a quadratic function, and three different power factor detection points may be selected, and the corresponding currents thereof are detected, thereby determining the quadratic function.
It should be noted that, when the driving current corresponding to the power factor is detected, the detection is performed under the standard illumination and temperature conditions, so as to avoid the influence on the detection result due to the change of the illumination and the temperature.
In step S120, a standard driving current of the display panel may be calculated through the power function. The standard driving current is the driving current of the display panel under the theoretical condition. A standard drive current curve can be obtained by a power function.
And substituting each power factor into a power function, and calculating the power corresponding to each power factor. And obtaining the brightness corresponding to each power factor through power calculation. And calculating the standard driving current corresponding to each power factor through the brightness of the display panel, and storing the standard driving current corresponding to each power factor in a storage unit of the controller.
For example, the power function of the display panel is a piecewise linear function, and each power factor is substituted into the piecewise linear function to obtain the power corresponding to each power factor. And multiplying the maximum brightness of the display panel by corresponding power to obtain standard brightness corresponding to the power factor, and calculating to obtain standard driving current through the standard brightness.
In step S130, an actual driving current of the display panel may be detected, wherein the actual driving current is a driving current actually detected when the display panel operates.
In the working process of the display panel, the actual driving current of the display panel fluctuates due to the change of the external environment, for example, the driving current of the OLED display panel changes when the illumination and the temperature change. If the display panel or other devices including the display panel are used in a place where the temperature variation is large, the driving current may fluctuate greatly, and there may be a large difference between the actual driving current and the standard driving current. When the OLED display panel lights the same screen, the longer the lighting time is, the longer the driving current of the display panel will be, that is, under the same power factor, the fluctuation will also exist in the actual driving current of the display panel, so the actual driving current of the display panel needs to be detected in real time.
And detecting the actual driving current corresponding to the power factor of the current display panel in real time in the working process of the display panel.
For example, the display panel driving current detecting apparatus may be an apparatus as shown in fig. 5, and the driving current detecting apparatus includes a current real-time detecting module 540, the driving current real-time detecting module 540 is connected to a driving circuit 530 of the display panel 510, and the driving circuit is connected to the signal generator 520. The driving circuit is connected to a first power supply 560, the driving current flow real-time detection module 540 is connected to a second power supply 550, and the first power supply 560 may be a logic power supply. On the other hand, the display panel driving current detecting apparatus may be as shown in fig. 6, the current real-time detecting module 540 is disposed between the driving circuit 530 and the display panel 510, and the first power supply 560, the second power supply 550 and the signal generator 520 are all connected to the driving circuit 530.
In step S140, it is determined whether the actual driving current exceeds the standard by comparing the actual driving current with the standard driving current.
In the working process of the display panel, the power factor of the current display panel is calculated according to the display content of the display panel, and the actual driving current of the display panel under the power factor is detected in real time. Acquiring the standard driving current corresponding to the power factor obtained in the step S120; multiplying the standard driving current by a specified coefficient to obtain a standard driving current threshold value; and comparing the actual driving current with a standard driving current threshold value, wherein if the actual driving current is greater than the standard driving current threshold value, the actual driving current exceeds the standard.
The designated coefficient is a numerical value which is larger than or equal to 1, and is set according to the actual working requirement. For example, if 10% more is required as a limiting condition and the display panel can still operate normally, the coefficient is set to 1.1. The specified coefficients can be adjusted if in practical applications other values of constraints are required.
When the actual driving current is larger than the standard driving current threshold value, the actual driving current exceeds the standard, and when the actual driving current is smaller than or equal to the standard driving current threshold value, the actual driving current does not exceed the standard.
The actual driving current and the standard driving current are compared in real time, the driving current consumed by the display panel fluctuates when the display panel displays the same content, and whether the actual current exceeds the standard or not is obtained in real time by comparing the actual driving current and the standard driving current in real time.
In step S150, if the actual driving current exceeds the standard, the actual driving current may be adjusted.
When the actual driving current exceeds the standard, the driving voltage can be reduced so as to reduce the actual driving current. When the driving voltage is reduced, the driving voltage can be gradually reduced within a specified time, the feedback time of the driving current and the perception of human eyes are considered, the phenomenon that the sudden reduction of the voltage causes the brightness mutation of the display panel to influence the display effect is avoided, and the user experience is reduced.
And if the actual current does not exceed the standard, namely the actual driving current is smaller than the standard driving current threshold value, continuously keeping the current working state.
The adjustment of the display panel can be realized through the voltage adjusting device, when the actual driving current is larger than the standard driving current threshold value, the controller sends out a voltage adjusting signal, and the voltage adjusting device receives the voltage adjusting signal to adjust the driving voltage. The voltage regulation signal may include information such as a regulation trigger command, a regulation amount, and a regulation time to control the driving voltage to drop by a specified regulation amount within the regulation time.
Of course, it is easily understood by those skilled in the art that in other exemplary embodiments of the present disclosure, the target character sequence may also be marked in other ways, such as by specifically encoding the target character sequence, and the like, which is not specifically limited in this exemplary embodiment.
It should be noted that although the various steps of the methods of the present disclosure are depicted in the drawings in a particular order, this does not require or imply that these steps must be performed in this particular order, or that all of the depicted steps must be performed, to achieve desirable results. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step execution, and/or one step broken down into multiple step executions, etc.
Further, in the present exemplary embodiment, there is also provided an apparatus 200 for controlling a driving current of a display panel, which includes, referring to fig. 2: a power function determination module 210, a standard drive current calculation module 220, a detection module 230, a determination module 240, and an adjustment module 250.
The power function determination module 210 may be used to determine a power function of the display panel;
the standard driving current calculating module 220 may be configured to calculate a standard driving current of the display panel through a power function;
the detection module 230 may be used to detect the actual driving current of the display panel;
the judging module 240 may be configured to judge whether the actual driving current exceeds the standard by comparing the actual driving current with the standard driving current;
the adjustment module 250 may be used to adjust the actual drive current if the actual drive current exceeds the standard.
According to the device for controlling the driving current of the display panel, the standard driving current of the display panel is obtained through calculation according to the power function of the display panel, the actual driving current is detected in the working process of the display panel, the actual driving current and the standard driving current are compared, whether the actual driving current exceeds the standard or not is judged, and if the actual driving current exceeds the standard, the actual driving current is adjusted. On one hand, the problems that the brightness of the display panel fluctuates, the brightness changes greatly and the display effect is influenced due to the fact that the current flowing through the display panel changes along with the changes of illumination and temperature are solved by adjusting the actual driving current, and the display effect is improved; on the other hand, the phenomenon that the driving current is too large so as to damage the luminescent material and the driving circuit of the display panel is avoided, and the service life of the display panel is prolonged.
The specific details of each device module for controlling the driving current of the display panel have been described in detail in the corresponding method for controlling the driving current of the display panel, and therefore are not described herein again.
It should be noted that although in the above detailed description several modules or units of the apparatus 200 for controlling a display panel driving current are mentioned, this division is not mandatory. Indeed, the features and functionality of two or more modules or units described above may be embodied in one module or unit, according to embodiments of the present disclosure. Conversely, the features and functions of one module or unit described above may be further divided into embodiments by a plurality of modules or units.
In addition, in an exemplary embodiment of the present disclosure, an electronic device capable of implementing the method is further provided, where the electronic device may be a timing control circuit board (Tcon), or may also be a display or a terminal including the timing circuit board, and the embodiment of the present disclosure is not particularly limited thereto.
As will be appreciated by one skilled in the art, aspects of the present invention may be embodied as a system, method or program product. Thus, various aspects of the invention may be embodied in the form of: an entirely hardware embodiment, an entirely software embodiment (including firmware, microcode, etc.) or an embodiment combining hardware and software aspects that may all generally be referred to herein as a "circuit," module "or" system.
An electronic device 300 according to such an embodiment of the invention is described below with reference to fig. 3. The electronic device 300 shown in fig. 3 is only an example, and should not bring any limitation to the functions and the scope of use of the embodiments of the present invention.
As shown in fig. 3, electronic device 300 is embodied in the form of a general purpose computing device. The components of electronic device 300 may include, but are not limited to: the at least one processing unit 310, the at least one memory unit 320, a bus 330 connecting different system components (including the memory unit 320 and the processing unit 310), and a display unit 340.
Wherein the storage unit stores program code that is executable by the processing unit 310 to cause the processing unit 310 to perform steps according to various exemplary embodiments of the present invention as described in the above section "exemplary method" of the present specification.
The storage unit 320 may include readable media in the form of volatile storage units, such as a random access memory unit (RAM)3201 and/or a cache memory unit 3202, and may further include a read only memory unit (ROM) 3203.
The storage unit 320 may also include a program/utility 3204 having a set (at least one) of program modules 3205, such program modules 3205 including, but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which, or some combination thereof, may comprise an implementation of a network environment.
The electronic device 300 may also communicate with one or more external devices 370 (e.g., keyboard, pointing device, bluetooth device, etc.), with one or more devices that enable a user to interact with the electronic device 300, and/or with any devices (e.g., router, modem, etc.) that enable the electronic device 300 to communicate with one or more other computing devices. Such communication may occur via an input/output (I/O) interface 350. Also, the electronic device 300 may communicate with one or more networks (e.g., a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network, such as the internet) via the network adapter 360. As shown, the network adapter 340 communicates with the other modules of the electronic device 300 over the bus 330. It should be appreciated that although not shown in the figures, other hardware and/or software modules may be used in conjunction with electronic device 300, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, among others.
Through the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein may be implemented by software, or by software in combination with necessary hardware. Therefore, the technical solution according to the embodiments of the present disclosure may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (which may be a CD-ROM, a usb disk, a removable hard disk, etc.) or on a network, and includes several instructions to enable a computing device (which may be a personal computer, a server, a terminal device, or a network device, etc.) to execute the method according to the embodiments of the present disclosure.
In an exemplary embodiment of the present disclosure, there is also provided a computer-readable storage medium having stored thereon a program product capable of implementing the above-described method of the present specification. In some possible embodiments, aspects of the invention may also be implemented in the form of a program product comprising program code means for causing a terminal device to carry out the steps according to various exemplary embodiments of the invention described in the above-mentioned "exemplary methods" section of the present description, when said program product is run on the terminal device.
Referring to fig. 4, a program product 400 for implementing the above method according to an embodiment of the present invention is described, which may employ a portable compact disc read only memory (CD-ROM) and include program code, and may be run on a terminal device, such as a personal computer. However, the program product of the present invention is not limited in this regard and, in the present document, a readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
The program product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium include: an electrical connection having one or more wires, a portable disk, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
A computer readable signal medium may include a propagated data signal with readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A readable signal medium may also be any readable medium that is not a readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Program code for carrying out operations for aspects of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device and partly on a remote computing device, or entirely on the remote computing device or server. In the case of a remote computing device, the remote computing device may be connected to the user computing device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computing device (e.g., through the internet using an internet service provider).
Furthermore, the above-described figures are merely schematic illustrations of processes involved in methods according to exemplary embodiments of the invention, and are not intended to be limiting. It will be readily understood that the processes shown in the above figures are not intended to indicate or limit the chronological order of the processes. In addition, it is also readily understood that these processes may be performed synchronously or asynchronously, e.g., in multiple modules.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is to be limited only by the terms of the appended claims.
Claims (10)
1. A method of controlling a drive current of a display panel, comprising:
determining a power function of the display panel, wherein the power function is a function of power and a power factor, and the power factor is a ratio of the sum of the brightness of the lighted pixels on the display panel to the sum of the maximum brightness of all the pixels;
calculating the standard driving current of the display panel through the power function;
detecting an actual driving current of the display panel;
multiplying the standard driving current by a specified coefficient to obtain a standard driving current threshold value;
comparing the actual driving current with the standard driving current threshold value, and judging whether the actual driving current exceeds the standard or not;
and if the actual driving current exceeds the standard, adjusting the actual driving current.
2. The method of controlling a display panel drive current of claim 1, wherein determining a power function of the display panel comprises:
detecting standard driving currents corresponding to a plurality of power factors of a display panel;
and determining the power function of the display panel according to the standard driving current and the type of the power function corresponding to the plurality of power factors of the display panel.
3. The method of controlling a display panel drive current of claim 2, wherein the power function is a piecewise function.
4. The method for controlling the driving current of the display panel according to claim 3, wherein the detecting the driving currents corresponding to a plurality of power factors of the display panel comprises:
and detecting the driving current corresponding to the power factor at the demarcation point of the power function.
5. The method of claim 2, wherein calculating the standard driving current of the display panel comprises:
and calculating the standard driving current corresponding to each power factor of the display panel, and storing the standard driving current.
6. The method as claimed in claim 5, wherein comparing the actual driving current with the standard driving current threshold to determine whether the actual driving current exceeds the standard driving current threshold comprises:
acquiring the stored standard driving current;
and comparing the actual driving current with the standard driving current threshold value, wherein if the actual driving current is greater than the standard driving current threshold value, the actual driving current exceeds the standard.
7. The method of claim 1, wherein said adjusting said actual drive current if said actual drive current exceeds a threshold comprises:
and if the actual driving current exceeds the standard, reducing the driving voltage so as to reduce the actual driving current.
8. An apparatus for controlling a driving current of a display panel, comprising:
a power function determination module for determining a power function of the display panel, the power function being a function of power with respect to a power factor, the power factor being a ratio of a sum of luminances of pixels lit on the display panel to a sum of maximum luminances of all pixels;
the standard driving current calculating module is used for calculating the standard driving current of the display panel through the power function;
the detection module is used for detecting the actual driving current of the display panel;
the acquisition module is used for multiplying the standard driving current by a specified coefficient to acquire a standard driving current threshold value;
the judging module is used for comparing the actual driving current with the standard driving current threshold value and judging whether the actual driving current exceeds the standard or not;
and the adjusting module is used for adjusting the actual driving current if the actual driving current exceeds the standard.
9. An electronic device, comprising
A processor; and
a memory having computer readable instructions stored thereon which, when executed by the processor, implement the method of any of claims 1 to 7.
10. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the method according to any one of claims 1 to 7.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810848089.5A CN108877673B (en) | 2018-07-27 | 2018-07-27 | Method and device for controlling driving current of display panel, electronic equipment and storage medium |
| US16/453,233 US10997913B2 (en) | 2018-07-27 | 2019-06-26 | Method and apparatus for controlling drive current of display panel, electronic device, and storage medium |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810848089.5A CN108877673B (en) | 2018-07-27 | 2018-07-27 | Method and device for controlling driving current of display panel, electronic equipment and storage medium |
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| CN108877673B true CN108877673B (en) | 2020-12-25 |
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| CN110148380B (en) * | 2019-04-30 | 2020-11-24 | 深圳市华星光电半导体显示技术有限公司 | Display picture adjusting method and device and storage medium |
| CN110767170B (en) * | 2019-11-05 | 2020-11-10 | 深圳市华星光电半导体显示技术有限公司 | Picture display method and picture display device |
| CN113178167A (en) * | 2021-04-16 | 2021-07-27 | Tcl华星光电技术有限公司 | Display panel and driving method thereof |
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| KR101027825B1 (en) * | 2003-09-11 | 2011-04-07 | 파나소닉 주식회사 | Visual processing device, visual processing method, visual processing program, and semiconductor device |
| KR101362981B1 (en) * | 2007-01-05 | 2014-02-21 | 삼성디스플레이 주식회사 | Organic light emitting display device and driving method thereof |
| CN104520918B (en) * | 2012-08-02 | 2016-08-31 | 夏普株式会社 | Display device and its driving method |
| US9666119B2 (en) * | 2012-08-30 | 2017-05-30 | Apple Inc. | Systems and methods for controlling current in display devices |
| CN103996374B (en) * | 2014-05-12 | 2016-09-07 | 京东方科技集团股份有限公司 | External dynamic compensates the device and method of display screen active area direct current pressure drop |
| JP2016071981A (en) * | 2014-09-29 | 2016-05-09 | 三菱電機株式会社 | Light source control device and light source control method |
| KR102326029B1 (en) * | 2015-03-13 | 2021-11-15 | 삼성디스플레이 주식회사 | Data compensation device and display device having the same |
| CN106297674B (en) * | 2015-05-18 | 2019-07-26 | 青岛海信电器股份有限公司 | A kind of backlight brightness control method, device and display equipment |
| CN106611583B (en) * | 2017-02-24 | 2020-03-03 | 京东方科技集团股份有限公司 | Gamma voltage debugging method and device for electroluminescent display device |
| JP2018165737A (en) * | 2017-03-28 | 2018-10-25 | 富士通株式会社 | Drive circuit and image projection device |
| CN107731165B (en) * | 2017-11-27 | 2019-07-26 | 合肥鑫晟光电科技有限公司 | A kind of current control method and its device |
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| US20200035155A1 (en) | 2020-01-30 |
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